<template>
  <div>
    <!--    面包屑导航区域-->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card>
      <!-- clearable:是否可清空 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getGoodsList">
            <el-button slot="append" icon="el-icon-search" @click="getGoodsDate"></el-button>
        </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="goAddPage">添加商品</el-button>
        </el-col>
      </el-row>
      <!-- table表格区域 -->
      <el-table :data="goodsList" border stripe>
        <el-table-column type="index" label="#"></el-table-column>
        <el-table-column label="商品名称" prop="goods_name"></el-table-column>
        <el-table-column label="商品价格(元)" prop="goods_price" width="105px"></el-table-column>
        <el-table-column label="商品重量" prop="goods_weight" width="85px"></el-table-column>
        <el-table-column label="创建时间" prop="add_time" width="140px">
          <template slot-scope="scope">
            {{scope.row.add_time | dataFormat}}
          </template>
        </el-table-column>
        <el-table-column label="操作" width="170px">
          <template slot-scope="scope">
            <el-button type="success" icon="el-icon-edit" size="mini" @click="editGoods"></el-button>
            <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeById(scope.row.goods_id)"></el-button>
          </template>
        </el-table-column>
      </el-table>
    </el-card>
    <!-- 分页区域 -->
    <el-pagination
      @size-change="handleSizeChange"
      @current-change="handleCurrentChange"
      :current-page="queryInfo.newPage"
      :page-sizes="[5, 10, 15, 20]"
      :page-size="queryInfo.pagesize"
      layout="total, sizes, prev, pager, next, jumper"
      :total="total" background>
    </el-pagination>
    <!-- 编辑商品对话框 -->
    <el-dialog
      title="编辑商品"
      :visible.sync="editDialogVisible"
      width="50%">
      <span>这是一段信息</span>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editDialogVisible = false">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data(){
    return {
      // 查询参数对象 
      // query:搜索关键字,pagenum:当前页数
      // pagesize:每页显示多少条数据
      queryInfo:{
        query:'',
        pagenum:1,
        pagesize:10
      },
      // 商品列表
      goodsList:[],
      // 商品总数据条数
      total:0,
      // 编辑商品对话框的显示与隐藏
      editDialogVisible : false
    }
  },
  created(){
    this.getGoodsList()
  },
  methods:{
    // 根据分页获取对应的商品列表
    getGoodsList(){
      this.getGoodsDate()
    },
    // 搜索框点击查询商品信息
    getGoodsQueryList(){
      this.queryInfo.pagenum = 1
      this.getGoodsDate()
    },
    async getGoodsDate(){
      const {data:res} = await this.$http.get('goods',{
        params: this.queryInfo
      })
      if(res.meta.status !== 200){
        return this.$message.error(res.meta.msg)
      }
      this.$message.success(res.meta.msg)
      this.goodsList = res.data.goods
      this.total = res.data.total
    },
    // 触发了这个函数，就会得到最新的每页条数
    handleSizeChange(newSize){
      this.queryInfo.pagesize = newSize
      this.getGoodsList()
    },
    // 当前的页码值发生改变，可以接收到最新的页码值
    handleCurrentChange(newPage){
      this.queryInfo.pagenum = newPage
      this.getGoodsList()
    },
    async removeById(id){
      const confirmResult = await this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err => err)
      if (confirmResult !== 'confirm') {
        return this.$message.info('取消删除操作')
      }
      const {data:res} = await this.$http.delete(`goods/${id}`)
      if(res.meta.status !== 200){
        return this.$message.error(res.meta.msg)
      }
      this.$message.success(res.meta.msg)
      this.getGoodsList()
    },
    editGoods(){
      this.editDialogVisible = true
      console.log('aaaa');
    },
    goAddPage(){
      this.$router.push('/goods/add')
    }
  }
}
</script>

<style lang="less" scoped>

</style>